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Entwicklung eines Untersuchungsverfahrens fuer Bohrstellen fuer die Bestimmung der Merkmale des Erdoel-Muttergesteins

Description: Das Projekt "Entwicklung eines Untersuchungsverfahrens fuer Bohrstellen fuer die Bestimmung der Merkmale des Erdoel-Muttergesteins" wird vom Umweltbundesamt gefördert und von Technische Universität Berlin, Institut für Geologie und Paläontologie durchgeführt. General Information: The IR procedure for analysis of kerogen isolated from its mineral matrix has certain distinct advantages over the classical elemental analysis. It is potentially simpler in its application, quicker and cheaper, and gives more information. Compared to Rock Eval analysis the results are more reliable. At present the full analysis takes about 3 hours (including sample homogenization, bitumen extraction, TOC determination, kerogen isolation, evaluation and interpretation).This compares with only 1 1/2 h for a Rock-Eval analysis (incl. sample homogenisation, TOC and interpretation). By avoiding kerogen isolation and making determinations and classifications on the homogenized original sample, it should be possible to reduce the IR analysis time to about that of a Rock Eval analysis. However, IR results were anticipated to be more reliable and to convey more information including the mineralogical characteristics of the petroleum source rocks as well as a classification of bitumen and crude oil. The proposed development of the method addressed the problem of calibrating the organic amplitudes within the spectra of the samples without prior isolation of the kerogen in order to reduce overall analysis time to a level competitive with Rock Eval. The following steps were necessary to calibrate IR whole rock analysis: I. Quantitative determination of mineral contents and organic properties by a number of different methods. II. Calibration of different methods applying factor analysis and predetermined properties on IR spectra of large sets of standard samples. III. Calculation of different properties of unknown samples using the developed methods. Conventionally extraction of soluble organic matter (bitumen) is carried out by a 48 h soxhlet extraction and saturated hydrocarbons are separated by some chromatographic techniques. It has been shown that addition of frigen (CCl3F) to the bitumen results into the frigen phase of mainly saturated components which, while not identical to the saturates fraction, are sufficiently similar for the determination of common chromatographic parameters (Ganz et al., 1990). Fractionation time is typically reduced to a few seconds. The intention of the project was to reduce analysis time (possibly to as low as 30 min/homogenized sample) by avoiding the kerogen isolation stage and refining procedures and computational techniques to produce a comprehensive well site geochemical screening method.

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Origin: /Bund/UBA/UFORDAT

Tags: Erdöl ? Alicyclischer Kohlenwasserstoff ? Berlin ? Halogenkohlenwasserstoffe ? IR-Spektroskopie ? Kalibrierung ? Kohlenwasserstoff ? Raffination ? Bitumen ? Chemie ? Chemische Analyse ? Extraktion ? Organisches Material ? Verfahrensoptimierung ? Gesamter organischer Kohlenstoff ? Petroleum ? Amplitudenspektrum ? Geologie ? Messverfahren ? Paläontologie ? Prüfverfahren ? Standardmethode ? Klassifikation ? Mineral ? Gestein ? Fluorchlormethan ? Kerogen ? Screening [Voruntersuchung] ?

Region: Berlin

Bounding box: 10.44987° .. 10.44987° x 54.03573° .. 54.03573°

License: cc-by-nc-nd/4.0

Language: Deutsch

Organisations

Time ranges: 1988-06-01 - 1991-05-31

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